Door-knob extension handle



y 1957 A. J. SUTTER 2,801,122

DOOR-KNOB EXTENSION HANDLE Original Filed Sept. 3. 1954 INVENTOR;

I173; =3 61mm wcw,

ATTORNEYS United States Patent DOOR-KNOB EXTENSION HANDLE Arwid 3'.Sutter, Ontario, Calif.

Original application September 3, 1954, Serial No. 454,649, now PatentNo. 2,756,088, dated July 24, 1956. Divided and this application June14, 1956, Serial No. 591,437

1 Claim. (Cl. 292-347) This invention relates to a door-knob extensionhandle.

An object of the invention is to provide an efficient doorknobattachment whereby the door-knob, upon which the device is mounted, canbe easily rotated when manual pressure is applied.

Another object of this invention is to provide a manually-operateddevice that is securely clamped to the spindle of a door-knob forefliciently operating a door-lock.

With the foregoing and other objects in view, this invention comprisescertain novel constructions, combinations, and arrangements of parts aswill be hereinafter fully described, illustrated in the accompanyingdrawings, and more particularly pointed out in the appended claim.

This is a divisional application growing out of my allowed application,Ser. No. 454,049, filed September 3, 1954, and allowed January 11, 1956,Door-Knob Extension Handle, now Patent No. 2,756,088, dated July 24,1956.

In the drawings:

Figure 1 is a view in side elevation of this invention, and

Figure 2 is a plan view thereof.

Figure 3 is a sectional view of the invention taken on line 3-3, Figure1 and looking in the direction of the arrows. This figure also shows thedoor-knob in full lines.

Figure 4 is a sectional view taken on line 44, Figure 3, and looking inthe direction of the arrows.

Referring to the drawings by numerals, 1 is the spindle of an ordinarydoor-lock, on the outer end of which spindle is an ordinary door-knob 2.

The extension handle 3 of this invention comprises an elongated lever 4that is usually gripped by the operator to manipulate the device. Theinner end of the handle-3 is provided with a curved chamber 5 which isadapted to embrace the perimetrical portion of door-knob 2, Fig. 3.Integral with the handle 3 at the curved chamber 5 is a lateralextension 6 which terminates at its outer end in a flat portion 7. Thisfiat portion 7 rests snugly upon a portion of the spindle 1 as shown,with a ring-like clamp 8 on said fiat portion 7. This clamp 8 isprovided with a bolt and nut of common construction for holding the endsof said common clamp 8 together. This clamp 8 securely fastens theextension handle 3 in place as shown. It is to be understood that thefiat portion 7, Fig. 3, is curved in cross section.

It is readily understood that when this invention is applied to adoor-knob the leverage permitted by the device will enable the door-knobto be turned with a minimum of muscular effort.

While I have described the preferred embodiment of the invention andillustrated the same in the accompanying drawings, certain minor changesor alterations may apper to one skilled in the art to which thisinvention relates during the extensive manufacture of the same, and I,therefore, reserve the right to make such changes or alterations asshall fairly fall within the scope of the appended claim.

What I claim is:

In a device of the character described, the combination with a handoperated door knob provided with a spindle, of a rigid lever providedwith an under curved chamber at one end adapted to embrace aperimetrical portion of said hand operated door knob in an arctherealong, said lever being normal to said spindle, a lateral extensionon said lever at said curved end extending in the same longitudinaldirection on said spindle a substantial distance along said spindlebeyond said knob, and means clampmg said extension on said spindle.

References Cited in the file of this patent UNITED STATES PATENTS629,999 Jacobs Aug. 1, 1899 1,611,549 Moore Dec. 21, 1926 2,058,685 HaanOct. 27, 1936

